Which of the following is an output of production?

Suppose Maria can make 12 pizzas or 4 lasagnas every Saturday afternoon, while Gina can make 10 pizzas or 2 lasagnas every Saturday afternoon. Which statement is true?

A) Maria is the most efficient producer of both pizza and lasagna. B) Gina is the least efficient producer of both pizza and lasagna. C) It costs Maria 3 pizzas to produce 1 lasagna. D) It costs Gina 5 lasagnas to produce 1 pizza. E) All of the above are true.

Recent proposals to allow the Social Security trust fund to invest in the stock market (instead of buying government bonds) are based on the premise that

A) the returns to stocks are higher than the returns to bonds. B) the returns to stocks aren't as risky as the returns to bonds. C) the transactions costs for investing in stocks are lower than the transactions costs for investing in bonds. D) stocks are more liquid than bonds.